Improvement in clamps for mortising-machines



NITED- STATES ANTON VSCHM'ACKERS, OF CINCINNATI, OHIO, ASSIGNOR TO J. A.FAY & CO., O

' SAME PLACE.

IMPROVEMENT IN CLAMPS FOR MORTISING-MACHINES.

To all whom t mag/concern: Beit known that I, ANTON SorrMAoKERs, of

Cincinnati, Ohio, have invented a new and useand held fast during theaction of the chisel.

Figure l is a perspective view of a mortisingmachine bed embodying myinvention. Fig. 2 shows the saine bed provided with an extension piecefor greater widths. Fig. 3 is a rear view of the same with two extensionpieces.

A represents the level portion or bed proper. B is the customary guideor back-liange rising vertically vfrom the rear edge of the bed. Theiiange B is traversed by an oblique slot, b, to receive the lug C of aclamp, C C', whose projection C stands or depends somewhat in front ofand parallel with the flange B, and which clamp can be elevated ordepressed within its slot to suit the width of the stuff. The projectionC is provided with a screw, D, having a foil or button, d, and'a head orhandle, al', which, being screwed in or out, becomes effective to graspthe stu firmly upon the bed. For stuli wider than can be confined in thebed as thus constructed, I provide an additional slotted extension, B',capable of being united to the back B by means of ears E and bolts F. Ofsuch extensions there may be provided several of diverse widths to suitdifferent dimensions of stuff to be worked.

This form of clamp grasping the top edge of the stuff holds it immovablyat the very point where the chisel strikes it. This firm holding of theupper edge results in perfect accuracy and uniformity of work.

I claim herein as new and of my invention- The clamp C Cf, provided withscrew D el d', and occupying' slot b in back B or B', as and for thepurpose set forth.

In testimony of which invention I hereunto set my hand.

ANTON SCHMACKERS.

J Arms H. LAYMAN. (125)

